How to update an item from the database after selecting it from a clickable list?

Hi I'm new to jQuery and Java and I'm struggling to successfully update an object after selecting it from the clickable list.

I followed the clickable list tutorial and managed to QUERY the list from my database where {"Accept":false} and then click to see the details of the item through Model and Storage.
I'm struggling to successfully invoke the UPDATE service after loading the details page. The user has to select a boolean and insert a code and then 'patch' the object but nothing happens on the database?

I tried to also invoke a READ service by reading data from the storage of the 'selectedItem' but no luck.

Any help would be greatly appreciated!
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